I ended up not using my stock intake manifold, so now I need to find a solution for my choke. I'd like to go electric, but let me know what you guys have done. I've not been able to find the right words to make a google search useful. It is on a 1970 with an L46. Aluminum intake.

 

I googled this: electric choke convertion kit for 70 corvette. And got this.

https://www.ebay.com/itm/Chevrolet-C...-/171126684307

that's if you have a Qjet.

 

For 75 and up, I think you can do this with proper GM/Delco parts, or a close approximation. I'd email @lars for advice, and his timing and Q-Jet papers.

Here's a possibly helpful thread to start with.
https://www.corvetteforum.com/forums...onversion.html

 

What intake manifold do you have? The L46 was not an aluminum intake.
What carb do you have? If you have a 1970 Q-Jet, you have a divorced choke carb. The carb itself cannot be converted to electric since it is a divorced choke carb.
The only way to make a divorced choke carb electric is to mount an electric divorced choke on the manifold in place of the stock divorced choke coil. This requires that the manifold you use has provision for mounting of a divorced choke coil. If it does not, you cannot use or mount the electric divorced choke conversion without machining the manifold to accept the electric divorced choke, with associated fabrication work for the linkage. If it does have provision for the divorced choke, why don't you use the stock divorced choke coil?
Carbs Unlimited has the electric choke conversion, but as noted, it requires that you have a manifold with provision for mounting the coil:
https://www.carburetion.com/sitesear...%20Conversions

Your manifold needs to have a mounting spot for the divorced choke like this in order for an electric choke conversion to be installed:


...or like this:


The electric conversion is then mounted to the mounting pad on the manifold:


It has to be mounted flat to the manifold. If your manifold does not have a pad like this, you will need to machine one, or fabricate a mounting pad to install to the manifold. You will then need to fabricate a custom choke rod to connect to the carb:




Your other option is to use a 1976 - 1980 M4M Q-Jet with integral choke and install an electric choke housing in it.
Lars

 

I used the choke conversion from Quadrajet parts, You just need to pay attention to which way your choke opens as they set up the spring to unwind in the correct direction when it heats up. https://quadrajetparts.com/electroni...78-p-2640.html

https://quadrajetparts.com/electroni...78-p-2640.html

I used it ona Edelbrock RPM intake

 

That's the same setup offered by Carbs Unlimited as shown above in my post. All Chevy Q-Jet chokes operate the same direction, except 1968 427, which is opposite: The choke rods pulls DOWN when cold, and pushes UP when hot (except on '68 427). Only some of the EDL RPM intakes have the pad for the divorced choke coil - the "RPM air gap" intakes cannot accept the divorced choke electric conversion. You will also have problems on manifolds such as a Victor Jr., which has no pad for the choke.

Lars

 

Sorry, let me try to be a little clearer. The motor is an L46, so the original manifold had the heat riser that actuated the choke. I've changed that manifold and now have an Edelbrock aluminum. I am using the same carb, and offhand I can't remember the date for that carb. This intake does not have the option for a divorced choke - it is an Edelbrock Performer.

I've got a few qjets laying around I've had on other builds, so I can probably cobble one together that uses an electric choke, I was just hoping to use this one as it is rebuilt and working well.

 

Most of the EDL "Performer" manifolds do not have the mounting pad for the divorced choke, so you cannot use the electric choke conversion shown above for the 4MV divorced choke carb with that manifold unless you do some creative machining and fabrication to create a mounting surface for the divorced electric choke.

Lars

 

I had a parts qjet I cobbled together years ago that used an electric choke I got off ebay. It required drilling, so I'd like to avoid doing that again, but it worked really well and mounted to the carb.

 

Actually, CarbJunkys has a setup that they have pieced together from M4M parts to adapt onto the 4MV carbs - sells for around $80. I have never used one or seen one in person, but they have had this on the market now for a couple of years. It only fits the early 4MV carbs from '67 - '71 with the slotted lever on the airhorn shaft - it will not work on the '72-'74 4MVs with the airvalve shaft with the single hole in the lever, unless you retrofit the carb with a '67-'71 or '75-'80 secondary airvalve shaft:
https://www.carbjunkys.com/Quadrajet...l-p/cj1000.htm

The other potential issue with this setup is that it uses the 1975-1980 choke pulloff. These pulloffs have a very fast release rate, and will often cause a bad secondary tip-in stumble. If this occurs, you have to fill the vacuum nipple hole and re-drill it to .021" diameter to regain control over the secondary airvalve opening rate.

Lars

 

How 'bout a manual choke. NAPA and PepBoys have them on the shelf in a bubble pack - around 10 bucks. Probably much easier than trying to convert a divorced choke to electric or modify a manifold for a divorced choke.

 

Just go to a Holley with an electric choke.